American Association for the Advancement of Science
American Institute of Biological Sciences
American Society of Ichthyologists and Herpetologists
- 2013 Recipient of R. K. Johnson Award for Outstanding Service to the society
- President 2003
- 2001 Recipient of Gibbs Award for Outstanding Research in Systematic
- Ichthyology
- Treasurer 1992-2000
- Executive Committee 1992-2005
- Board of Governors 1986-present
- Chair, Local Meeting Committee 1992
- Editorial Board 1984-1985, 1987-1988, 1989-1990, 1991-1992
- Robert H. Gibbs Memorial Award Committee 2003-2005 (Chair 2005)
- Web Content & Management Committee 2004
- Robert K. Johnson Award Committee 2004 (Chair, 2004)
- Nominating Committee 2005-2007 (Chair, 2007)
- Names of Fishes Committee 2009-present (Chair, 2011-present).
Association of Systematics Collections/Natural Science Collections Alliance
- President, 2012-14
- Societal representative for ASIH 1993-2014
- Societal representative for FLMNH 2010-2014
Illinois Academy of Science
Native Fishes Conservancy
- Elected to Board of Governors, 1997-2000
North American Native Fishes Association
- Elected to Board of Governors, 1992-1996
Sigma Xi
Southeastern Fishes Council